Shock-absorbing buffer for bulkheads



PatentedDeclZl, I. f

:ERNST musea; or wrnmnasnonr, Vuna-iai5B-'nZanini, '-GERMAY.

' s'HoeKfAiasonBi-neg; isnrrnltfnof ,nufrfliginans f.lily;t..inveiition relates`v to ,a shoclbsorbing buffer which isl suitable as a bulkhead, and Vmore.,particularly 4to a :buifenof that type in lWhich insteadof .or in .addition to 5V they usual ksprings the 4forcey ,ofy the shfocl its lesse-ned or absorbed byutilizingzsaid l'l'Cl to Vproduce a noneel'astic deformationfof a suitable material. i' f ity demandais sabaaaaauyin ai i sib sectionsstressedi uniformly a po of the elasticity f the material,4 whereby the greatest possible utilization of the dev vformation Work contained in theV material is attained for the above specified vkind-s vof stresses.

l A further advantage of myinvention is V that `the scrap products in railroad or othell lworking may be employed as a cheap' de Vstruction material.

In the drawing, ytivo embodiments of my 'invention 'are illustrated diagrammaticaliy Wayof example. In the drawings isz-fy j VFig.` 1, a sectional elevation'of-a shock 7.30 absorbing buffer for bending strains,v t Y fFig. 2, a cross-section along lineA-B of the Figa` 1v through the tubular `shoclr member, f

Asorbing buffer for torsional strains,

' Fig. 4L', a cross-sectionV along-line C -Dfofrig. a, andY Fig. 5, a' cross-section along 'line'EF of die -Referrmg' more particularly 'to Figs. Y1

and 2,'aV tubular: shock memberl or tube. a is vmounted uponiagsuitable supporting member so 'as to be. maintained substantially i atV the levelV of the'V railway Wagon or truck` buffers. The ,supportingv member b is,l mount- V j ed uponfany suitable or, desired` foundation a. ,In the endof the tubular member c kfac- V ing the track is adaptedto .slide the:buffer` "rod or plunger e lof fa',' c1'0ss-section correr] vsponding with the cross-section of the tube Y c. rlhe tubec also-serves for the reception?- of the material for absorbing the'foree "of f v the shocker bloiv. i' In' the embodiment of ,y

my invention illustrated in this figure, short pieces dof any desired cross-section are employed vas yan "equivalent for the usuali* 1is'fen`ert'e`d v'upon the. pl i. 4 in t1ie ,.c11-eetion o f Mir ,mprored buffet iS; distinguished 10 from Vthek hitherto known Vbuffersoflfthis type Y by the fact'that,theinaterialg.to

. @by 3 bending or torsin strains up t'they break? 15 ing `lianitand-upto the, complete utilization" l l t l preferably "so chosen that the elasticity .of

deformation material CZ 'is 3, a sectional elevation vofashoclrab-V t placement ofl thelplunger e vthe pieces or section-s ldat the place "02 are pushed from vthe part canto theietube end c4 they are; sub-iv rail, 'as illi'istrated in FiguQ.

' fAt `the` end 'oppositejthewbuifer plunger,'

the tube in an ot ereloylV t the outermost fibre ofthe materia-l' is uti-l lized toits fullest extent so that the entire `completely and uniformly destroyed. l v

The shoclttube of is-as a( matter of course made of-such 'a'fmaterial and of "such dimensions that -it is capable of bringing'about the rvdeformation of the .pieces yCZ Without being v8(1 itself a'ppreciably deformed or destroyed.

l In the embodiment of-my linvention illus-` trated in the Y Figs.' 345, theshock tube is turned or twisted..nearV its rear' end at c2 around its l aXis through a` .certain angle,` in i y the embodiment illustrated'v through an anf- V gle-"ofabout sothatthe fronti-part 3f 1 serving for. the 1; reception of" they ,buffer l plunger e andof the deformation material'lcl fistwiste'd throughl anang'le of' about 90o .nv0 Y relation'to therear endet, asis shown par-V ticularly clearly inthe Figs. t and 5.v

VVhen now in, consequence of anaxial dis jected to a twistingv or torsional deformartionjin"correspondence with' th-eytwist ofjthe t. tube bymeans of which deformation in conjunction Withf the frio-tion causedtliereby the forcejof the shock is absorbed.` Y

f' "Preferably lthe tube V part c3 .is twisted in relation tothe tube-end '04 bysuch an angle 'that'vtlieoutside fibres ofthe material CZ are stressed up to the complete utilization of v the tension whereby again all the material in-fany Lcross-sectionl isutilized for the Work of destruction 'up' toits highest limit.

It will be vreadilyunderstood that the em- :bodiments illustrated are -only examples and lm. t

lthat VtheY broad principle underlying any invention is capableof beingfvaried or .modiioo fied within Wide iimits, and 'it is therefere located atrthe rear'of said plunger Within said tubular memberr and adapted to be pushed along saidtubular member by' said plunger, said preshaped end of saidtubulai member being so formed that said deformation material inbeing` orcedthrough said rear end portion is subjected to a bending strain absorbing the force of the shock.

,2. A shocksabsorbing buffer for bulk-l ivlieads, comprising in combination, a tubular member preshaped y'at the rear end, a buffer plunger slidable Within the front end of said tubular member, deformation material located at the rear of said plunger Within said'V tubular member, said preshapeci end of said tubular member being so formed that said deformation material vdisplaced by said plunger is in alll its cross-sections uniformly `strained for bending up to its complete exhaustion on passing` through` said* tubular member.v

A shock-absorbing buffer for bulkheads, comprising in combination, a 'tubu- A lar member', a buffer plunger slidable Within the lfront end of said tubularv member7 deformation material at the back ot' said plunger Within said tubular member and adapted to be pushed thoughl said tubular member by the displacement o said plung#y er, vthe end of said ltubular member opposite to `saidy plunger. being curved for the purpose of bending said dei'ormation material displaced by saidplunger Within said tubular member on passing through the curved end of said tubular member.V i p In testimony WhereofrlI have signed my name to this specification.

ERNST rauscn. c 

